This lick is similar to this one I posted the other day. You can play this lick after the previous one - in the following bar, for example - to build up a solo.

This lick uses the same mixture of notes from the major and minor pentatonic scales. These notes establish the A chord sound. The lick also uses the characteristic minor - major 3rd sound in the hammer-on from the 5th to the 6th fret.

Building on a lick by adding or modifying notes or changing the rhythm is another common feature of blues playing. You can try applying this with your own licks.